Q: Car runs better if I unplug fuel injector 8 but makes a ticking noise and runs sluggish if it's connected 2006 Ford Mustang

asked by on

If I unplug fuel injector 8 and run the car it runs better. If I plug it up. The car makes a ticking noise and runs sluggish. I've changed fuel filter. Cleaned maf Cleaned throttle body Changed a spark plug. If I accelerate there is a popping noise. I have to acell easy to avoid the noise.

My car has 156800 miles.

Hello - your symptoms suggest a failing injector . It appears to be leaking when it’s plugged in, as well as noisy. Check for problem codes relating to a rich mixture,, although it’s possible that the oxygen sensors for that bank of cylinders is leaning out the other 3 on that side. This would create rough running for sure. That would explain the popping (probably backfiring or misfiring at least on the lean cylinders). I recommend a misfiring inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, and give you an accurate assessment of damage and cost estimate for repairs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Car runs better if I unplug fuel injector 8 but makes a ticking noise and runs sluggish if it's connected 2006 Ford Mustang

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Skipping, light rough idle, & smoking

Hi and thanks for contacting YourMechanic. Depending on what color the smoke is will determine what is happening with the engine. If there is heavy black smoke, then there is too much fuel in the cylinders and the fuel is...

Q: My car does not go past 40 kmph while driving

This is a common problem that can be caused by a clogged catalytic converter. If the converter is clogged or partially clogged, the exhaust gasses cannot escape the engine as fast as they should and this chokes the engine. Typically,...

Q: Coolant level dropping after a short time

A cooling system that keeps getting low on coolant in a short amount of time has an active leak in the system. If the leak cannot be found externally then the leak will be internal to the engine. You will...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.